John j



(No Model.)

J-J. RIDGWAY.

- LOCK.

' No. 498,490. 9 Patented May 30,1893.

UNITED STATES PATENT OFFICE.

JOHN J. EIDGWAY, OF BROOKLYN, NEW YORK.

LOCK.

SPECIFICATION forming part of Letters Patent No 498,490, dated May 30, 18 93. I

Application filed October 10, 1892. $erial No. 448,323- (No model.)

To whom it may concern.-

Be it known that I, J OHN J. RIDGWAY, a citizen of the United States, residing atBrooklyn, in the county of Kings and State of New Yorlghaveinvented an Improvementin Locks, of which the following is a specification,

Locks have heretofore been made with a spring latch with an inclined end that is moved by contact with the nosing or strike plate, and in many instances the latch has been withdrawn by the action of a key on the outside of the door, or by a handle on the inside, and in other instances the spring latch has been combined with a bolt acted upon by a key.

in this second movement the tumbler mechanism is 'unlatched so that the latch bolt is held positively by the tumbler, thus combining in one look and with one sliding latch, the advantages of a positive locking mechanism and of a spring latch, and when the door is closed, the latch bolt is held by the tumbler mechanism and cannot be pushed back by an instrument acting against the inclined end thereof as in ordinary spring latches.

In the drawings, Figurel is an elevation of the lock mechanism with the case in section and the parts in the position they assume when the latch bolt is projected. Fig. 2 is a similar view with the latch bolt withdrawn. Fig. 3 is a plan view with the casein section. Fig. 4. is a cross section at the line 00 acjand Fig. 5 is a cross section at the line 'y y.

The lock case is of any desired construction and usually provided with top, bottom, back and end plates and a removable cap plate, and the latch bolt a is formed with a beveled end, as shown in Fig. 3, and the portion within the lock case is open for the passage of the spindle d and for the reception of the parts hereinafter described. This spindle d is to be adapted for the reception of a knob at either end, when such knob is provided, and the other end of the spindle is to be acted upon by any suitable key, and as these keys and knobs are well known and may be of any desired character I have not representedthe same in the drawings.

Upon the latch bolt are arms b b that project laterally and receive springs c c that project the bolt. These springs are represented as helical; they may however be of any desired character, and uponthe spindle d are arms 6 that act against the arms 17 b upon the bolt to move the bolt in withdrawing the same. There are also upon the spindle d the cams f that-project at oppositesidcs of said spindle and are adjacent to the sliding cam it; this cam h is represented as resting against one side of the body of the latch bolt and provided with ribs h that passbeneath the inwardly projecting ribs '6 upon the body of the latch bolt, so that the sliding cam h can move back and forth upon the body of the latch bolt, and it is projected toward the spindle by the spring t which may be of any suitable character, and such. spring is represented as fastened at one end upon the body of the latch bolt. The tumbler n is pivoted at 10 to the case of the lock and it is provided with a claw 11 that engages a notch in the body of the latch bolt, and this claw 11 is also adjacent to the beveled end of the sliding cam h. Hence when the spindle d is partially rotated by the action of the knob, one of the cams f acting against the cam plate It moves the same into the position represented in Fig. 2, unlatching and lifting the tumbler nso that the latch bolt is liberated and it is free to be moved backwardly by either of the spindle arms e; and it will be noticed in both Figs. 1 and 2 that the cams f first act upon the sliding cam h to lift the tumbler n and then one of the spindle arms e acts against one of the armsb orb to move the bolt. At the opposite end of the tumbler a to the claw 11 is a toe I longitudinally and slides upon the stationary pin or stud 4 upon the look case, and thereis a notch in the mortise block for the projection 5 upon the spring Z that is fastened at one end upon the body of the latch bolt, and the free end is adjacent to one incline or cam surface upon the sliding cam h, and I prefer to coil the spring m around the stud S and adjacent to the studs 6 and 7, so that one end of said spring at is adjacent to the back end of the mortise block is.

The operation of these parts is as follows .When the latch bolt is projected in the position shown in Fig. 1 and the spindle d is turned, the cam plate h is first moved thereby as aforesaid, and in addition to lifting the tumbler 'nit acts against the spring? to separate the block 5 from the notch in the mortise block 70, so that the latch bolt a can be withdrawn by the action of the arms 6 without moving the mortise block it, and the parts assume the position represented in Fig. 2, and the tumbler nis held up by the latch m, and

. as the key is removed or theknob of the spindie liberated, the springs c 0 project the latch bolt, but the tumbler nis held in its elevated 'position illustrated in Fig. 2, hence the bolt a is simply a spring latch when in this condition, and when the door is shut and the inclined end of the bolt to coming against the stationary strike plate or nosing, is forced inwardly, the block 5 on the spring Z having engaged the notch in the mortise block 7c, such bolt and its spring Z carry the mortise block backwardly and cause the rear end of such mortise block to press against the spring m and unlatch the latch m and allow the tumbler to fall and engage the notch in the latch bolt and convert the latch into a tumbler look, so as to hold such latch firmly and prevent it being pushed back by any tool or article acting against the inclined projecting end of such latch.

By this improvement I am enabled to combine in one lock and with one spring bolt the devices of a positive acting tumbler lock and 'a self-closing spring latch.

I claim as my invention 1. The combination with a spring latch, of a tumbler and a spring latch for holding the tumbler in an elevated position after it has been raised, and mechanism acted upon by the latch bolt for unlatching the tumbler and allowing it to fall when an end movement is given to the latch bolt in the closing of the door, substantially as set forth.

2. The combination with the latch bolt, its springs, spindle and spindle arms, of a tumbler to hold the latch bolt, a cam plate acted upon by the spindle arm for raising the tumbler, a latch for holding the tumbler in its elevated positioma mortise block carried by the latch bolt, and a spring for connecting the mortise block and latch bolt, whereby the tumbler holding latch is disengaged by a movement of the latch bolt in closing the door, substantially as set forth.

3. The latch bolt a having a beveled end and the-projecting arms I) b, and the spindle d having arms 8 and camsf, in combination with the sliding cam h, the tumbler n engaging the latch bolt and raised by the sliding cam, a mortise block supported by and mov- I ing with the latch bolt, a spring and block for connecting the latch bolt and mortise block, and which spring is disengaged from the mortise block by the action of the sliding cam h, a spring latch for holding the tumbler when moved out of contact with the latch bolt and which tumbler latch is disengaged by the action of the mortise block when the'latch bolt is moved in closing the door, substantially as set forth.

Signed by me this 1st day of October, 1892.

JOHN J. RIDGWAY. WVitnesses:

GEO. T. PINoKNEY, WILLIAM G. MOTT. 

